)

* relax server's version checking

This commit relaxes the version check the driver does on connect: this
version compatibility is migrated on the server and the driver only
checks that server's version is more recent than a set minimum (that of
the release that applies version policy on the server).

* remove unused defines

remove superfluous defines

* add 'version' field into request objects

This commit adds the newly required 'version' field into the REST
request objects.

* only add the "version" to "query" objects

This commit fixes two issues:
- the "version" field is only required for "query" requst objects, but
not needed for "cursor" (paginating) ones;
- the lenght of the version field value is now correctly estimated in
CBOR encoding.

* update unit tests to "version" in query-req only

Update position of the "version" field in expected output of the request
object.

(cherry picked from commit 8b045b1)

This commit adds a new feature that allows the user to limit the size of
the string types (TEXT, KEYWORD & co.). This is needed for those
applications that won't accept the large maxes that ES does for the
fields of these types.

The change will manifest itself as:
- limitation of the COLUMN_SIZE, BUFFER_LENGHT and CHAR_OCTET_LENGTH in
the SQLColumns output;
- limitation of the "display size" attribute in the description of the
columns of the above mentioned types;
- truncation of the results to the configured limit for the columns of
the above mentioned types.

The commit also adds unit tests for the "faked" (i.e. driver-returned
results) catalog functions, removes stale DSN attribute definition (left
over from elastic#215) and corrects the row index in a debug statement.

* introduce new varchar limitation option

This commit adds a new feature that allows the user to limit the size of
the string types (TEXT, KEYWORD & co.). This is needed for those
applications that won't accept the large maxes that ES does for the
fields of these types.

The change will manifest itself as:
- limitation of the COLUMN_SIZE, BUFFER_LENGHT and CHAR_OCTET_LENGTH in
the SQLColumns output;
- limitation of the "display size" attribute in the description of the
columns of the above mentioned types;
- truncation of the results to the configured limit for the columns of
the above mentioned types.

The commit also adds unit tests for the "faked" (i.e. driver-returned
results) catalog functions, removes stale DSN attribute definition (left
over from #215) and corrects the row index in a debug statement.

* add new integration testing running mode

Add new option to execute only the tests requiring no indexing of data
(currently server info-fetching tests and the protocol tests).

The commit also sets the autocommit as parameter to connection function,
instead of the subsequent operation.

* introduce new varchar limitation option

This commit adds a new feature that allows the user to limit the size of
the string types (TEXT, KEYWORD & co.). This is needed for those
applications that won't accept the large maxes that ES does for the
fields of these types.

The change will manifest itself as:
- limitation of the COLUMN_SIZE, BUFFER_LENGHT and CHAR_OCTET_LENGTH in
the SQLColumns output;
- limitation of the "display size" attribute in the description of the
columns of the above mentioned types;
- truncation of the results to the configured limit for the columns of
the above mentioned types.

The commit also adds unit tests for the "faked" (i.e. driver-returned
results) catalog functions, removes stale DSN attribute definition (left
over from #215) and corrects the row index in a debug statement.

* add new integration testing running mode

Add new option to execute only the tests requiring no indexing of data
(currently server info-fetching tests and the protocol tests).

The commit also sets the autocommit as parameter to connection function,
instead of the subsequent operation.

(cherry picked from commit 77dc4ff)

* introduce new varchar limitation option

This commit adds a new feature that allows the user to limit the size of
the string types (TEXT, KEYWORD & co.). This is needed for those
applications that won't accept the large maxes that ES does for the
fields of these types.

The change will manifest itself as:
- limitation of the COLUMN_SIZE, BUFFER_LENGHT and CHAR_OCTET_LENGTH in
the SQLColumns output;
- limitation of the "display size" attribute in the description of the
columns of the above mentioned types;
- truncation of the results to the configured limit for the columns of
the above mentioned types.

The commit also adds unit tests for the "faked" (i.e. driver-returned
results) catalog functions, removes stale DSN attribute definition (left
over from #215) and corrects the row index in a debug statement.

* add new integration testing running mode

Add new option to execute only the tests requiring no indexing of data
(currently server info-fetching tests and the protocol tests).

The commit also sets the autocommit as parameter to connection function,
instead of the subsequent operation.

(cherry picked from commit 77dc4ff)